high=float(input("身高:"))
weight=float(input("体重:"))
BIM=weight/(high**2)
if BIM<18.5:
    print("过轻")
elif BIM<=25:
    print("正常")
elif BIM<=28:
    print("过重")
elif BIM>=32:
    print("肥胖")
else:
    print("严重肥胖")

